Description:
Abstract: The Elqui-Vicuna area, Coquimbo province, Chile, was selected for uranium reconnaissance on the basis of two known uranium occurrences and favorable area-wide geologic indications of the possible presence of uranium in commercial quantities.

Description:
Abstract: The area was examined for a period of about two weeks during October and November 1958 by geologists of the U.S. Atomic Energy Commission and the Instituto de Investigaciones Geológicas de Chile for the purpose of evaluating known uranium occurrences and determining the overall potential of the region for uranium.

Description:
Introduction: This exploratory work was undertaken as a preliminary evaluation of the area's uranium potential, and was limited to reconnaissance for favorable geologic indications of uranium, which included visits to selected localities and mining districts.

Description:
Abstract: In 1958 geologists of the U.S. Atomic Energy Commission and the Instituto de Investigaciones Geológicas de Chile made a reconnaissance for uranium in the Mamiña area, Province of Tarapacá in northern Chile.

Description:
Abstract: In September-October 1958 a six-day reconnaissance in the Tocopilla area, Antofagasta Province, Chile, was made by members of the U.S. Atomic Energy Commission and the Instituto de Investigaciones Geológicas de Chile for the purpose of evaluating reported uranium occurrences.

Description:
From book jacket: In the humid forests of Cape Horn, a single tree can host more than 100 species of little epiphyte plants. The floor of the forest and the rocks are also covered by numerous species of liverworts, mosses, and lichens. The decision to stop at a tree or rock and explore these “miniature forests” generates an authentic ecotourism experience. In a small area we can spend several minutes or hours with a magnifying glass or camera discovering the colors, shapes, and textures of the most diverse organisms of Cape Horn. This guidebook enhances exploration by providing information to understand the architecture, life cycles, and identification of taxonomic groups of the organisms that form them. For example, when viewing a yellow orange organism, the full color pictures and text in the guidebook illustrate that what you are viewing on the inter-tidal rocks is a crustose lichen, with a well-defined circular structure belonging to the genus Caloplaca that enjoys a broad distribution in inter-tidal zones of Arctic and Antarctic areas. The authors of this guidebook also provide a novel twist on other, more traditional field guides to bryophytes and lichens by introducing the innovative, sustainable tourism activity of “ecotourism with a hand lens.” They present a strong natural history narrative and an ecological and ethical orientation for the appreciation of wonders of the miniature forests of Cape Horn.

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Description:
Abstract: In the Chañaral-Taltal area of northern Chile irregular replacement type iron deposits are especially well developed along a somewhat radioactive lithologic belt in andesite volcanic rocks and Cretaceous dioretic intrusions to the east of the Atacama fault, a prominent shear zone.

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